// For full API documentation, including code examples, visit http://wix.to/94BuAAs
$w.onReady(function () {
//TODO: write your page related code here…
});
is the page code and it produces the erroe.
please let me know the solution!
You cannot add script tags to the code editor. It seems like you were trying to add Google Adwords? If so, you can use the Track & Analyze feature . For further questions about this feature, please contact Wix Support team as they know best about this product 
Best,
Tal.